CN203640612U - Line-shaped tapered connecting drill bit - Google Patents
Line-shaped tapered connecting drill bit Download PDFInfo
- Publication number
- CN203640612U CN203640612U CN201320885130.9U CN201320885130U CN203640612U CN 203640612 U CN203640612 U CN 203640612U CN 201320885130 U CN201320885130 U CN 201320885130U CN 203640612 U CN203640612 U CN 203640612U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- hole
- line
- drill
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 18
- 239000000956 alloy Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 abstract description 14
- 239000011435 rock Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model provides a line-shaped tapered connecting drill bit, and belongs to jackdrill drill tools. The line-shaped tapered connecting drill bit mainly solves the problem that a small hole cannot be drilled through an electric hammer in the rock drilling process, wherein an existing drill bit can only drill a hole with the diameter phi larger than 20 mm and cannot drill a hole with the diameter phi less than 20 mm. The line-shaped tapered connecting drill bit can fill up the blank. The line-shaped tapered connecting drill bit is formed by an alloy piece and a drill bit body, wherein the alloy piece and the drill bit body are connected in a medium frequency welding mode; a cone is arranged at one end of the drill bit body; a cylinder is arranged at the other end of the drill bit body; the alloy piece is welded to the cone; an inner hole is formed in the cylinder; the portion, at the end of the cylinder, of the inner hole is a conical hole, wherein the conical hole is used for being connected with a drill rod; a water hole is formed in the cylinder and communicated with the inner hole. The line-shaped tapered connecting drill bit is connected with a jackdrill through the drill rod and used in cooperation with the jackdrill to drill a small hole in rock drilling.
Description
Technical field
The utility model relates to hammer drill drilling tool, and specifically a kind of in-line tapering connects bore bit.
Background technology
The tapering using at present connects bore bit rock drilling diameter and more than 20, is less than the bore bit of Φ 20 because appearance and size is little at Φ, easily distortion in processing, thereby manufacture difficulty is large, and difficult quality guarantee, so that drilling tool producer seldom produces.And in rock drilling operation, often want Drilling Φ below 20 as apertures such as Φ 16, Φ 18, this just need minor diameter tapering connect bore bit.
Summary of the invention
The utility model is to meet the actual needs that rock drilling is produced, and provides a kind of minor diameter in-line tapering to connect bore bit, to realize the Drilling of Φ 20 following apertures.
The technical solution of the utility model is as follows: in-line tapering connects bore bit and comprises bore bit body and alloy sheet, one of bore bit body is cone, on cone, be shaped with alloy groove, alloy sheet is installed in alloy groove, and the two is welding as one with intermediate frequency, and cone rear portion is cylinder, barrel portion is shaped with endoporus, one sector hole of termination is conical bore, is shaped with oblique water hole on cylinder, and water hole communicates with endoporus.
Compare with existing bore bit, the utlity model has following advantage: 1, its structure can be manufactured small-sized bore bit, in order to Drilling aperture, made up existing bore bit and can not bore the deficiency of aperture, thereby meet the needs of rock drilling operation, and be widely used; 2, simple in structure, be convenient to processing and manufacturing and be easy to ensure the quality of products; 3, bore bit is connected through drill steel with rig, easy accessibility; 4, select the material manufacture that comprehensive mechanical performance is good, can bear alternating stresses complicated in rock drilling process, improve the bulk life time of bore bit.
Accompanying drawing explanation
Fig. 1 is that in-line tapering connects bore bit outline drawing
Fig. 2 is that in-line tapering connects bore bit sectional view
Fig. 3 is the right view of Fig. 1
Drawing explanation
In Fig. 1: 1-alloy sheet 2-bore bit body
In Fig. 2: the 4-conical bore of 3-water hole
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described, as shown in Figure 1 and Figure 2, in-line tapering connects bore bit and comprises alloy sheet 1 and bore bit body 2, the two is welded as entirety with medium frequency welding, alloy sheet 1 is operate portions, the ballistic work bearing when rock drilling is generally in 0.4MPa left and right, and institute's rock drilling rank is f=14.Thereby select density 14.6g/cm
3, hardness is HRA87.6, flexural strength 2700N/mm
2alloy, when bore bit body 2 is worked, need adapt to complicated alternation mechanical stress, select the structural alloy steel 22SiMnNi2CrMo material manufacture that comprehensive mechanical is good.2 one of bore bit bodies are 110 ° of cones, with special fixture processing, centrum tip is shaped with alloy groove, and alloy sheet 1 is installed in groove, the two welds with medium frequency welding, alloy sheet profile is consistent with cone profile, and circular cone rear portion is cylinder, and cylinder inside is shaped with endoporus, termination one sector hole is 4 ° of conical bores 4, on cylinder, be shaped with oblique water hole 3 near cone place, with Special drilling jig processing, water hole 3 communicates with endoporus.
Claims (3)
1. an in-line tapering connects bore bit, it is characterized in that this bore bit comprises bore bit body (2) and alloy sheet (1), one of bore bit body (2) is cone, is shaped with alloy groove on cone, and alloy sheet (1) is installed in alloy groove, the two is welding as one with intermediate frequency, cone rear portion is cylinder, and barrel portion is shaped with endoporus, and a sector hole of termination is conical bore, on cylinder, be shaped with oblique water hole (3), water hole communicates with endoporus.
2. bore bit as claimed in claim 1, of it is characterized in that bore bit body (2) is 110 ° of cones.
3. bore bit as claimed in claim 1, is characterized in that cylinder termination one sector hole is 4 ° of conical bores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320885130.9U CN203640612U (en) | 2013-12-21 | 2013-12-21 | Line-shaped tapered connecting drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320885130.9U CN203640612U (en) | 2013-12-21 | 2013-12-21 | Line-shaped tapered connecting drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203640612U true CN203640612U (en) | 2014-06-11 |
Family
ID=50871867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320885130.9U Expired - Lifetime CN203640612U (en) | 2013-12-21 | 2013-12-21 | Line-shaped tapered connecting drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203640612U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194044A (en) * | 2016-08-31 | 2016-12-07 | 王华彬 | NEW TYPE OF COMPOSITE drill steel |
-
2013
- 2013-12-21 CN CN201320885130.9U patent/CN203640612U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194044A (en) * | 2016-08-31 | 2016-12-07 | 王华彬 | NEW TYPE OF COMPOSITE drill steel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: SHETANG road 741020 Gansu province Tianshui Maiji District No. 16 Patentee after: TIANSHUI PNEUMATIC MACHINERY Co.,Ltd. Address before: SHETANG road 741020 Gansu province Tianshui Maiji District No. 16 Patentee before: TIANSHUI PNEUMATIC MACHINERY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |